To enable custom replies an override must be defined in the devices coordinator that actually support custom replies.
The custom preferences allow to:
- enable / disable the default message suffix (Instinct 2 appends "sent from my $vendor device" to each reply by default)
- define custom messages to reply to calls and incoming messages (leaving those lists empty will enable the default messages to be used)
Also adds a new protobuf definition file of mostly unknown values that enable toggling the message suffix on Instinct 2.
